[sdiy] 20ms delay? analog allpass filter?

[Mike Bryant]

That's not analogue though, it's acoustic :-)

________________________________
From: Neil Johnson <neil.johnson71 at gmail.com>
Sent: 07 February 2023 12:04
To: Mike Bryant <mbryant at futurehorizons.com>
Cc: Roman Sowa <modular at go2.pl>; Neil Harper <metadata at gmx.com>; synth-diy at synth-diy.org <synth-diy at synth-diy.org>
Subject: Re: [sdiy] 20ms delay? analog allpass filter?

20ms is only about 6m or so.  Get creative with some plywood, foam, a
speaker and a microphone.

Neil

On Tue, 7 Feb 2023 at 12:02, Mike Bryant <mbryant at futurehorizons.com> wrote:
>
> Well it's more practical than 6000 km of wire :-)
>
> Alternatively you could bounce a signal off a satellite.
>
> Somehow I think delay is something best done digitally.
>
> ________________________________
> From: Synth-diy <synth-diy-bounces at synth-diy.org> on behalf of Roman Sowa <modular at go2.pl>
> Sent: 07 February 2023 11:11
> To: Neil Harper <metadata at gmx.com>; synth-diy at synth-diy.org <synth-diy at synth-diy.org>
> Subject: Re: [sdiy] 20ms delay? analog allpass filter?
>
> If you consider Spin Semiconductor's FV-1 chip as a "bog standard
> electronic part", then yes.
>
> Roman
>
> W dniu 2023-02-07 o 04:18, Neil Harper via Synth-diy pisze:
> > hey everyone,
> > I've been messing around with some digital stuff, where it's really easy
> > to make delays to do accurate karplus-strong type sounds for example.
> >
> > Anyways, it got me wondering if there's any analog equivalent? Let's say
> > I want a 20ms delay, is that in the realm of requiring a dedicated IC to
> > do the delay, or is that possible with bog standard electronic parts
> > like opamps and capacitors? 2
> >
> >
> >
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